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Internet # 325446533

Model # 5378106

Store SKU # 1010045308

32 fl. oz. Dual Action 365 Weed and Grass Killer Plus 12-Month Preventer Concentrate, Kills, Prevents for up to 1-Year

$64.99
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  • Kills and prevents weeds and grasses for up to 12 months
  • Rainproof in 30 minutes with visible results in hours
  • For use in cracks, crevices, patios, and other non-lawn areas
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Product Details

About This Product

Roundup Dual Action 365 Weed and Grass Killer Plus 12 Month Preventer Concentrate provides one-step weed protection for up to 12 months. This weed control kills and prevents many types of tough weeds and grasses for up to 12 months, including clover, dandelion, large and smooth crabgrass, poison ivy, and other broadleaf weeds, grassy weeds and brush. It is rainproof in as fast as 30 minutes and produces visible results in hours. Use Roundup Dual Action 365 Weed and Grass Killer Plus 12 Month Preventer where you want to kill existing weeds AND prevent new weeds for up to 1 year, such as cracks and crevices in driveways, sidewalks, and walkways, patios, paths, and under decks, gravel areas, and other non-lawn areas. Mix the concentrate according to label directions and spot treat or spray evenly each gallon of spray solution over 300 sq. ft. with a tank sprayer. Please note, to prevent new weeds and grasses from growing, YOU MUST SPRAY THE ENTIRE AREA you want to control, NOT JUST the emerged weeds. One 32 fl. oz. bottle makes up to 5.3 gallons (see booklet for mixing instructions) and covers up to 1,600 sq. ft.

Highlights

  • Roundup Dual Action 365 Weed and Grass Killer Plus 12 Month Preventer Concentrate provides one-step weed protection for up to 12 months
  • Our weed control kills and prevents many types of tough weeds and grasses for up to 12 months, including clover, dandelion, large and smooth crabgrass, poison ivy, and other broadleaf weeds, grassy weeds and brush
  • Roundup Dual Action 365 Weed and Grass Killer Plus 12 Month Preventer Concentrate is rainproof in as fast as 30 minutes and produces visible results in hours
  • Use this weed preventer where you want to kill existing weeds and prevent new weeds for up to 1 year, such as cracks and crevices in driveways, sidewalks, and walkways, patios, paths, and under decks, gravel areas, and other non-lawn areas
  • Mix Roundup Dual Action 365 Weed and Grass Killer Plus 12 Month Preventer Concentrate according to label directions and spot treat or spray evenly each gallon of spray solution over 300 sq. ft. with a tank sprayer
  • Shop all Roundup products
  • Return Policy

Product Information

Internet # 325446533

Model # 5378106

Store SKU # 1010045308

Additional Resources

Shop All Roundup

Specifications

Dimensions

Container Size (oz.)

32 oz

Product Size

32 OZ-Ounce

Product Width (in.)

4.764 in

Details

Application Type

Spray

Area of Use

Driveway, Landscape Bed, Patio

Compatible Grass Type

Not for use on lawns

Concentrated or Ready to Use

Concentrated

Emergent Type

Pre and Post Emergent

Form

Liquid

Organic

Non-Organic

Pack Size

1

Returnable

90-Day

Safe For

Not Safe for Kids and Pets

Safe for Edibles

No

Spray Application Type

Concentrate

Weed Type

Brush, Clover, Crabgrass, Dandelion, Poison Ivy

Questions & Answers

How to mix
ByMay 24, 2026
1 Answer | 
Answer This Question

Hi David, Thanks for reaching out about Roundup Dual Action Concentrate. The standard ratio is 6 fl oz (12 Tbs) per gallon of water. You can easily measure this using the included cap, which has lines for 1, 2, and 3 oz (as well as 20 to 80 ml). Just fill the liquid to the top of the line above your desired marking. Let us know if you need anything else!

By|May 30, 2026


    which roundup can I use safely in my flower beds
    ByMay 6, 2026
    1 Answer | 
    Answer This Question

    The Roundup Dual Action 365 Weed and Grass Killer Plus 12-Month Preventer Concentrate should not be used in the vicinity of any plants that you are looking to keep. In order to be able to make a proper recommendation, we need to know what kind of weeds you're trying to control. Please give us a call at 877-220-3089 so we can better assist you.

    By|May 11, 2026


      how soon can you plant new plants in this sprayed area
      ByApr 29, 2026
      1 Answer | 
      Answer This Question

      Thanks for reaching out! Roundup Dual Action 365 Weed & Grass Killer is a total vegetation killer and will prevent growth for up to 1 year (12 months) or more depending on environmental conditions. All ornamental bedding plants (annuals and perennials), trees, shrubs, sod and seed can be planted 1 year (12 months) after application of the product. If we can help with anything else, please give us a shout at 877-220-3089.

      By|May 3, 2026


        how many oz. of concentrate per gallon of water to mix
        ByApr 22, 2026
        3 Answers | 
        Answer This Question

        It’s about 8 ounces

        By|May 9, 2026

          Directions call for 6 oz per gallon

          By|Apr 28, 2026

            The Roundup Dual Action 365 Weed and Grass Killer Plus 12-Month Preventer Concentrate should be mixed at a rate of 6 fl oz (12 tbs) per 1 gallon of water. This should provide 300 sqft of product coverage.

            By|May 13, 2026

              (2)

              How many ounces of roundup per gallon of water
              ByApr 16, 2026
              1 Answer | 
              Answer This Question

              You've got a great question, and I'm happy to help you out with the dilution rate for our 4X Roundup Dual Action 365 Concentrate. Mix 6 fl oz (that's 12 tablespoons) of the concentrate with 1 gallon of water. Just so you know: 1 tablespoon = 3 teaspoons, and 1 fl oz = 2 tablespoons. One gallon of the mix will cover about 300 sq ft. Hope this helps you get your yard looking exactly how you want it!

              By|Apr 22, 2026


                Why isn’t there a cancer warning on this product?
                ByMar 22, 2026
                1 Answer | 
                Answer This Question

                The formula was changed at the conclusion of the court case.

                By|Apr 4, 2026


                  what temperature is to low to apply
                  ByMar 17, 2026
                  1 Answer | 
                  Answer This Question

                  Hi Dave! Thanks for your question. For best results, apply Roundup Dual Action 365 Weed & Grass Killer PLUS 12 Month Preventer, during warm, sunny weather above 60°F. Most weeds grow best when temperatures are between 65°F and 85°F.

                  By|May 5, 2026

                    (1)

                    Can I use on wet or moist weeds or grass
                    ByMar 9, 2026
                    1 Answer | 
                    Answer This Question

                    Hello! Thanks for your question. Roundup Dual Action 365 Weed & Grass Killer Plus 12 Month Preventer should be applied to a dry area. Rain or watering 30 minutes after the application will not reduce weed control. We recommend applying when rain is not predicted for the next 24 hours to ensure that wind or rain does not blow or wash the product off the treatment area.

                    By|May 25, 2026

                      (1)

                      Viewing 1-8 of 58

                      Customer Reviews

                      4.4 out of 5

                      • 4.4 out of 1,123 reviews
                      • 84% recommend this product
                      Filter by:
                      Showing 1-10 of 1,123 reviews
                      Pretty good stuff
                      [This review was collected as part of a promotion.] This was pretty effective. I only used it in a small area in my yard because we don’t really have a weed problem but it worked where I used it. We use other Roundup products as well because it is efficient and fair prices.
                      by
                        This customer chose to rate the product and not provide text.
                        by
                        • Verified Purchase
                        Works great
                        [This review was collected as part of a promotion.] Works very well and easy to apply and use where needed. Measurements in the lid are super helpful as well. Would definitely buy and use again. This has been great.
                        by
                          Strong chemicals
                          [This review was collected as part of a promotion.] Well, I usually don’t like using chemicals like this, but sometimes we really need it. I was treating some stubborn grass and it helped a lot. But because of the chemicals I won’t be buying again. Please use mask, and gloves when using this.
                          by
                            Okay
                            [This review was collected as part of a promotion.] So I was very excited about receiving this to test it because we do have weeds, but the ingredients are super dangerous and it didn’t really kill our weed problem as expected
                            by
                            Response from Customer CareJul 24, 2025
                            Hello Taylor. We're sorry to read about your disappointment with Roundup Dual Action 365 Weed & Grass Killer PLUS 12 Month Preventer and appreciate your feedback. The best time to apply Roundup Dual Action 365 Weed & Grass Killer PLUS 12 Month Preventer would be when the weeds are actively growing, which typically occurs when temperatures are between 65-85 Degrees. apply when the area is dry from rain, water, or dew. A complete control may take up 1-2 weeks. We want you to be confident in our products. For this reason, we offer a product guarantee. If for any reason you, the consumer, are not satisfied with the results after using this product, you are entitled to get your money back. Limitations apply. At your earliest convenience, please reach out to us at866-324-2647 if we can further assist.
                              Can't recommend- shame on Round-up
                              Three years ago, this product was outstanding. But for the last 2 years, it has only lasted 2 months before weeds come back up. My use and application for all 3 years has been the same. I am super careful to spray all the pebbles on my paths and the block patio and walkways. I can no longer recommend this product as meeting its claims of 365. Best is 2 months.
                              by
                              Response from Customer CareJul 22, 2025
                              We're sorry to read about your disappointment with Roundup Dual Action 365 Weed & Grass Killer PLUS 12 Month Preventer and appreciate your feedback. Roundup Dual Action 365 Weed & Grass Killer PLUS 12 Month Preventer is a total vegetation killer plus weed preventer. It will kill virtually any plant that is green and growing and prevent weeds from growing in the treated area for up to 1 year. To prevent weeds from germinating, you must spray the entire area, not just the emerged weeds. It is also important not to break the invisible barrier created by the product by raking or digging the treated areas. Has it been a wet season in your area? In the case of heavy rainfall, applications every 6-8 months may be necessary. We want you to be confident in our products. For this reason, we offer a product guarantee. If for any reason you, the consumer, are not satisfied with the results after using this product, you are entitled to get your money back. Limitations apply. At your earliest convenience, please reach out to us at866-324-2647 if we can further assist.
                                Fast acting and potent
                                [This review was collected as part of a promotion.] This stuff is potent. I use it every year in our gravel. It doesn't last 12 months, but it works fast and kills everything until next spring. Ive made a few applications right before a pop up storm and was worried that it wouldn't be as effective, but it goes to work pretty fast with results seen by the next day.
                                by
                                  Concentrated!
                                  [This review was collected as part of a promotion.] Weed was coming growing through the pavers. So purpose is to use this weed killer to do its job so I can pull it out easily and resand in between. Easier application and I used a small sprayer bottle. This stuff is powerful and low maintenance last 12 months prevention! I have also weed growing between cracks of concrete side walk! I used a previous brand and would last for a short time. New growth will come back. This is my solution.
                                  by
                                    Awesome Weed Killer
                                    [This review was collected as part of a promotion.] This item did great in killing weeds in many areas of my yard. I followed the easy instruction on how to mix concentrated liquid with water, and I sprayed away. It does how a smell, but not a problem at all. Weeds eventually wilted away. Best of all, it's guaranteed to prevent new growth up to 12 months.
                                    by
                                      Works great
                                      [This review was collected as part of a promotion.] I used this to kill the grass so I could edge my garden with mulch and it worked like a charm! I covered up most of the now dead grass but also pulled some near my garden gate and it came out very easily.
                                      by
                                        Showing 1-10 of 1,123 reviews

                                        Compare Key Features

                                        current item

                                        Product Snapshot

                                        Must-have for anyone looking to kill and prevent weeds for up to 1 year.
                                        Ideal for customers who want 12-month weed prevention, ensuring a weed-free outdoor space.
                                        Ideal for customers who want year-long weed prevention, ensuring clear driveways and patios.
                                        Must-have for anyone looking to kill tough weeds and grasses to the root with ease.

                                        Coverage Area

                                        1, 600 sq. ft.
                                        300 sq. ft.
                                        3, 200 sq. ft.
                                        6, 300 to 12, 600 sq. ft.

                                        Concentrate or Ready-to-Use

                                        Ready to use
                                        Concentrated

                                        Rainproof

                                        Visible Results Time

                                        In hours
                                        Hours
                                        Starts immediately
                                        In hours

                                        Residual Effectiveness

                                        Up to 12 months
                                        Up to 12 months
                                        Up to 1 year
                                        Allows planting 1-30 days after